User Guide

ML6420, ML7420 NON-SPRING RETURN ELECTRIC LINEAR VALVE ACTUATORS
5 63-2533—2
Fig. 8. ML7420 wiring using a 2 to 10 Vdc
control signal and separate transformers.
Fig. 9. ML7420 wiring using a 2 to 10 Vdc
control signal and a common transformer.
Fig. 10. ML7420 wiring using a 4 to 20 mA
control signal and separate transformers.
Fig. 11. ML7420 wiring using a 4 to 20 mA
control signal and a common transformer.
Fig. 12. Location of W1, W2, and W3 selector plugs.
Fig. 13. Replacing actuator cover.
L1
(HOT
)
L2
1
1
WIRING
STRIP
F
+
–
T2
T1
O1
O2
1
1
2
2
3
3
4
5
6
L1
(HOT)
L2
1
ML7420
T775
(WITH 2-10 VDC OUTPUT)
DUAL
TRANSFORMER
S
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M17423
SENSOR
L1
(HOT
)
L2
1
1
WIRING
STRIP
F
+
–
T2
T1
O1
O2
1
1
2
2
3
3
4
5
6
ML7420
T775
(WITH 2-10 VDC OUTPUT)
SINGLE
TRANSFORMER
40 VA 24 VAC
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M17424
SENSOR
L1
(HOT
)
L2
1
1
WIRING
STRIP
F
+
–
T2
T1
O1
O2
1
1
2
2
3
3
4
5
6
L1
(HOT)
L2
1
ML7420
T775
(WITH 4-20 MA OUTPUT)
DUAL
TRANSFORMER
S
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M17425
500 OHM
RESISTOR
SENSOR
L1
(HOT
)
L2
1
1
WIRING
STRIP
F
+
–
T2
T1
O1
O2
1
1
2
2
3
3
4
5
6
ML7420
SENSOR
T775
(WITH 4-20 MA OUTPUT)
SINGLE
TRANSFORMER
40 VA 24 VAC
POWER SUPPLY. PROVIDE DISCONNECT MEANS
AND OVERLOAD PROTECTION AS REQUIRED.
M17426
500 OHM
RESISTOR
M1742
7
0 ... 10V2 ... 10V
W2
10V
0%
10V
W3
W1
100%50%
M17428